/* =========================================================
   精选集 · collections
   列表（策展书墙） + 详情（一册诗选） + 404
   ========================================================= */

/* ---------------- 页头 ---------------- */
.col-hero {
  position: relative;
  padding: clamp(40px, 6vw, 88px) 0 clamp(24px, 3vw, 44px);
  overflow: hidden;
}
.col-hero::before {
  content: "";
  position: absolute; inset: -20% -10% auto;
  height: 78%;
  background:
    radial-gradient(60% 80% at 18% 30%, color-mix(in srgb, var(--glow) 55%, transparent), transparent 70%),
    radial-gradient(46% 70% at 88% 8%, color-mix(in srgb, var(--accent) 9%, transparent), transparent 72%);
  pointer-events: none;
}
.col-hero__inner {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1.5fr) minmax(280px, .72fr);
  gap: clamp(32px, 5vw, 88px);
  align-items: end;
}
.col-hero__eyebrow { margin-bottom: clamp(18px, 3vh, 30px); }
.col-hero__title {
  font-family: var(--font-serif);
  font-weight: 400;
  font-size: clamp(38px, 6.4vw, 86px);
  line-height: 1.14;
  letter-spacing: .07em;
  color: var(--ink);
  text-wrap: balance;
}
.col-hero__br { display: block; }
.col-hero__lede { margin-top: clamp(20px, 3vh, 32px); max-width: 40ch; }
.col-hero__aside {
  display: flex;
  flex-direction: column;
  gap: var(--sp-6);
  padding: clamp(20px, 2.4vw, 30px);
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  background:
    linear-gradient(160deg, color-mix(in srgb, var(--glow) 42%, transparent), transparent 55%),
    color-mix(in srgb, var(--surface) 46%, transparent);
  position: relative;
}
.col-hero__aside::before {
  content: "”";
  position: absolute; top: 2px; right: 16px;
  font-family: var(--font-display); font-size: 64px; line-height: 1;
  color: var(--accent-2); opacity: .22;
  pointer-events: none;
}
.col-hero__note {
  font-size: clamp(15px, 1.15vw, 17px);
  line-height: 2.05;
  letter-spacing: .05em;
  color: var(--ink-2);
}
.col-hero__stats {
  display: flex;
  gap: clamp(18px, 2.6vw, 34px);
  border-top: 1px solid var(--line);
  padding-top: var(--sp-4);
  flex-wrap: wrap;
}
.col-hero__stats > div { display: flex; flex-direction: column-reverse; gap: 2px; }
.col-hero__stats dt { font-size: var(--fs-xs); letter-spacing: .18em; color: var(--ink-3); }
.col-hero__stats dd {
  margin: 0; font-size: clamp(19px, 1.9vw, 25px);
  line-height: 1.1; color: var(--ink); letter-spacing: .04em;
}
.col-hero__foot {
  position: relative;
  display: flex;
  align-items: center;
  gap: var(--sp-4);
  margin-top: clamp(28px, 4vw, 48px);
  padding-top: var(--sp-4);
}
.col-hero__foot-line { flex: 1; height: 1px; background: linear-gradient(90deg, transparent, var(--line-2), transparent); }
.col-hero__foot-en { font-size: var(--fs-xs); letter-spacing: .24em; color: var(--ink-3); white-space: nowrap; }

/* ---------------- 索引条（sticky） ---------------- */
.col-index {
  position: sticky;
  top: var(--nav-h);
  z-index: 30;
  border-block: 1px solid var(--line);
  background: color-mix(in srgb, var(--bg) 82%, transparent);
  backdrop-filter: blur(18px) saturate(140%);
}
.col-index__inner {
  display: flex;
  align-items: center;
  gap: var(--sp-4);
  min-height: 56px;
}
.col-index__label {
  flex: none;
  font-family: var(--font-display);
  font-size: 10.5px;
  letter-spacing: .3em;
  color: var(--ink-3);
}
.col-index__track {
  flex: 1;
  min-width: 0;
  display: flex;
  align-items: center;
  gap: 2px;
  overflow-x: auto;
  scrollbar-width: none;
  padding-block: 6px;
}
.col-index__track::-webkit-scrollbar { display: none; }
.col-index__item {
  display: inline-flex;
  align-items: baseline;
  gap: 7px;
  flex: none;
  padding: 6px 10px;
  border-radius: var(--r-sm);
  color: var(--ink-3);
  font-size: var(--fs-xs);
  letter-spacing: .06em;
  white-space: nowrap;
  transition: color var(--dur-mic) var(--ease), background var(--dur-mic) var(--ease);
}
.col-index__item .num { font-size: 10px; letter-spacing: .18em; color: var(--ink-3); transition: color var(--dur-mic); }
.col-index__item:hover { color: var(--ink); background: var(--accent-soft); }
.col-index__item.is-on { color: var(--ink); background: var(--accent-soft); }
.col-index__item.is-on .num { color: var(--accent); }
.col-index__name { max-width: 13ch; overflow: hidden; text-overflow: ellipsis; }
.col-index__hint { flex: none; font-size: var(--fs-xs); color: var(--ink-3); letter-spacing: .1em; }

/* ---------------- 策展书墙 ---------------- */
.col-list { padding-top: clamp(28px, 4vw, 56px); }
.col-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: clamp(30px, 3.8vw, 60px) clamp(24px, 3vw, 48px);
}
.col-card {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: var(--sp-5);
  min-width: 0;
  scroll-margin-top: calc(var(--nav-h) + 76px);
  border-radius: var(--r-md);
}
.col-card__body { display: flex; flex-direction: column; gap: 10px; min-width: 0; }
.col-card__top {
  display: flex; align-items: baseline; justify-content: space-between;
  gap: var(--sp-3);
  font-size: var(--fs-xs); letter-spacing: .16em; color: var(--ink-3);
}
.col-card__no { font-family: var(--font-display); letter-spacing: .24em; color: var(--accent-2); }
.col-card__curator { font-size: 11px; letter-spacing: .1em; color: var(--ink-3); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.col-card__title {
  font-family: var(--font-serif);
  font-weight: 400;
  font-size: clamp(21px, 2vw, 28px);
  line-height: 1.4;
  letter-spacing: .06em;
  color: var(--ink);
  transition: color var(--dur-mic) var(--ease);
}
.col-card__sub {
  font-family: var(--font-serif);
  font-size: var(--fs-sm);
  line-height: 1.9;
  letter-spacing: .03em;
  color: var(--ink-2);
}
.col-card__note {
  font-family: var(--font-serif);
  font-size: 12.5px;
  line-height: 1.95;
  letter-spacing: .02em;
  color: var(--ink-3);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.col-card__foot {
  display: flex; align-items: center; justify-content: space-between;
  gap: var(--sp-3);
  margin-top: 2px;
  padding-top: var(--sp-3);
  border-top: 1px solid var(--line);
  font-size: var(--fs-xs);
  letter-spacing: .1em;
  color: var(--ink-3);
}
.col-card__count b { font-family: var(--font-display); font-weight: 500; font-size: 13px; color: var(--ink-2); letter-spacing: .04em; }
.col-card__arrow {
  width: 34px; height: 34px; flex: none;
  display: grid; place-items: center;
  border-radius: 50%;
  border: 1px solid var(--line-2);
  color: var(--ink-2);
  opacity: .45;
  transform: translateX(-6px);
  transition: all var(--dur-mid) var(--ease);
}
.col-card__arrow svg { width: 14px; height: 14px; }
.col-card:hover .col-card__title { color: var(--accent); }
.col-card:hover .col-card__arrow,
.col-card:focus-visible .col-card__arrow { opacity: 1; transform: none; background: var(--ink); border-color: var(--ink); color: var(--bg); }

/* 首张 / 末张 大幅卡 */
.col-card--feature {
  grid-column: 1 / -1;
  display: grid;
  grid-template-columns: minmax(0, 1.06fr) minmax(0, .94fr);
  gap: clamp(24px, 3.4vw, 56px);
  align-items: center;
}
.col-card--feature .col-cover { aspect-ratio: auto; height: 100%; min-height: clamp(300px, 30vw, 440px); }
.col-card--feature .col-card__body { padding-block: clamp(8px, 1.6vw, 24px); }
.col-card--feature .col-card__title { font-size: clamp(27px, 3.2vw, 42px); }
.col-card--wide {
  grid-column: 1 / -1;
  display: grid;
  grid-template-columns: minmax(0, .94fr) minmax(0, 1.06fr);
  gap: clamp(24px, 3.4vw, 56px);
  align-items: center;
}
.col-card--wide .col-cover { order: 2; aspect-ratio: auto; height: 100%; min-height: clamp(220px, 22vw, 320px); }
.col-card--wide .col-card__body { order: 1; display: flex; flex-direction: column; justify-content: center; }
.col-card--wide .col-card__title { font-size: clamp(24px, 2.6vw, 34px); }

/* ---------------- 抽象封面（纯 CSS，无图片） ---------------- */
.col-cover {
  --cv-a: #a9c7d4;
  --cv-b: #446b80;
  position: relative;
  isolation: isolate;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  aspect-ratio: 5 / 4;
  background:
    linear-gradient(158deg,
      color-mix(in srgb, var(--cv-a) 66%, var(--bg)) 0%,
      color-mix(in srgb, var(--cv-b) 74%, var(--bg)) 100%);
  transition: border-color var(--dur-mid) var(--ease), box-shadow var(--dur-mid) var(--ease);
}
[data-mode="night"] .col-cover {
  background:
    linear-gradient(158deg,
      color-mix(in srgb, var(--cv-a) 24%, var(--bg)) 0%,
      color-mix(in srgb, var(--cv-b) 60%, var(--bg)) 100%);
}
.col-cover::before {
  content: "";
  position: absolute; inset: 0; z-index: 1;
  background:
    radial-gradient(110% 80% at 8% -6%, color-mix(in srgb, var(--bg) 46%, transparent), transparent 58%),
    linear-gradient(200deg, transparent 55%, color-mix(in srgb, var(--ink) 13%, transparent));
  pointer-events: none;
}
.col-cover::after {
  content: "";
  position: absolute; inset: 0; z-index: 0;
  opacity: .55;
  pointer-events: none;
}
.col-cover__glyph {
  position: absolute;
  z-index: 2;
  left: 50%; top: 50%;
  transform: translate(-50%, -50%);
  font-family: var(--font-serif);
  font-size: clamp(64px, 9vw, 118px);
  line-height: 1;
  letter-spacing: 0;
  color: color-mix(in srgb, var(--ink) 80%, transparent);
  text-shadow: 0 18px 50px color-mix(in srgb, var(--ink) 22%, transparent);
  transition: transform 1.1s var(--ease-out), color var(--dur-mid) var(--ease);
  user-select: none;
}
.col-cover__mood {
  position: absolute;
  z-index: 3;
  left: clamp(14px, 1.6vw, 22px);
  bottom: clamp(12px, 1.4vw, 20px);
  font-family: var(--font-display);
  font-size: 10px;
  letter-spacing: .34em;
  color: color-mix(in srgb, var(--ink) 62%, transparent);
}
.col-cover__frame {
  position: absolute;
  z-index: 3;
  inset: clamp(10px, 1.2vw, 16px);
  border: 1px solid color-mix(in srgb, var(--ink) 16%, transparent);
  border-radius: calc(var(--r-md) - 6px);
  pointer-events: none;
  transition: border-color var(--dur-mid) var(--ease), inset var(--dur-mid) var(--ease);
}
.col-card:hover .col-cover { border-color: var(--line-2); box-shadow: var(--shadow-sm); }
.col-card:hover .col-cover__glyph { transform: translate(-50%, -52%) scale(1.07); }
.col-card:hover .col-cover__frame { border-color: color-mix(in srgb, var(--ink) 28%, transparent); inset: clamp(8px, 1vw, 13px); }

/* 色调 × 五种 mood */
.col-cover--dawn   { --cv-a: #d8a8a6; --cv-b: #8d6579; }
.col-cover--day    { --cv-a: #a9c7d4; --cv-b: #446b80; }
.col-cover--dusk   { --cv-a: #c99a86; --cv-b: #6a5570; }
.col-cover--night  { --cv-a: #9fb2d8; --cv-b: #3d4c72; }
.col-cover--sakura { --cv-a: #e0b3c0; --cv-b: #9a6a7d; }

/* 纹理 × 五种 pattern */
.col-cover--ripple::after {
  background:
    repeating-radial-gradient(circle at 16% 92%, transparent 0 20px, color-mix(in srgb, var(--cv-b) 24%, transparent) 20px 21px);
  mask-image: radial-gradient(110% 100% at 10% 100%, #000 20%, transparent 72%);
  -webkit-mask-image: radial-gradient(110% 100% at 10% 100%, #000 20%, transparent 72%);
}
.col-cover--lines::after {
  background:
    repeating-linear-gradient(90deg, transparent 0 27px, color-mix(in srgb, var(--ink) 12%, transparent) 27px 28px);
  mask-image: linear-gradient(180deg, transparent, #000 30%, #000 74%, transparent);
  -webkit-mask-image: linear-gradient(180deg, transparent, #000 30%, #000 74%, transparent);
}
.col-cover--moon::after {
  background:
    radial-gradient(circle at 74% 24%, color-mix(in srgb, var(--bg) 84%, transparent) 0 8.5%, transparent 9.2%),
    radial-gradient(circle at 74% 24%, color-mix(in srgb, var(--bg) 26%, transparent) 0 17%, transparent 26%);
}
.col-cover--star::after {
  background-image:
    radial-gradient(circle at 20% 24%, color-mix(in srgb, var(--ink) 42%, transparent) 0 1px, transparent 1.6px),
    radial-gradient(circle at 68% 16%, color-mix(in srgb, var(--ink) 34%, transparent) 0 1.3px, transparent 1.9px),
    radial-gradient(circle at 34% 66%, color-mix(in srgb, var(--ink) 30%, transparent) 0 1px, transparent 1.5px),
    radial-gradient(circle at 82% 58%, color-mix(in srgb, var(--ink) 38%, transparent) 0 1.1px, transparent 1.7px),
    radial-gradient(circle at 56% 84%, color-mix(in srgb, var(--ink) 30%, transparent) 0 1px, transparent 1.5px);
  background-size: 46px 42px, 58px 63px, 39px 51px, 67px 47px, 53px 59px;
  opacity: .8;
}
.col-cover--grain::after {
  background-image:
    radial-gradient(circle at 30% 30%, color-mix(in srgb, var(--ink) 16%, transparent) 0 .6px, transparent 1px),
    radial-gradient(circle at 70% 66%, color-mix(in srgb, var(--bg) 30%, transparent) 0 .8px, transparent 1.2px);
  background-size: 5px 5px, 7px 7px;
  opacity: .7;
}

/* ---------------- 详情 · 吸顶子导航 ---------------- */
.col-subnav {
  position: sticky;
  top: var(--nav-h);
  z-index: 32;
  border-bottom: 1px solid var(--line);
  background: color-mix(in srgb, var(--bg) 90%, transparent);
  backdrop-filter: blur(18px) saturate(140%);
}
.col-subnav__inner {
  display: flex; align-items: center; gap: var(--sp-3);
  min-height: 56px;
}
.col-subnav__back {
  display: inline-flex; align-items: center; gap: 6px;
  flex: none; min-height: 40px; padding: 0 8px 0 2px;
  color: var(--ink-2); font-size: var(--fs-sm); letter-spacing: .08em;
  transition: color var(--dur-mic) var(--ease);
}
.col-subnav__back svg { width: 15px; height: 15px; transition: transform var(--dur-mic) var(--ease); }
.col-subnav__back:hover { color: var(--accent); }
.col-subnav__back:hover svg { transform: translateX(-3px); }
.col-subnav__rule { flex: none; width: 1px; height: 18px; background: var(--line-2); }
.col-subnav__title {
  flex: 1; min-width: 0;
  font-family: var(--font-serif);
  font-size: var(--fs-sm);
  letter-spacing: .08em;
  color: var(--ink);
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}
.col-subnav__meta { flex: none; font-size: var(--fs-xs); letter-spacing: .12em; color: var(--ink-3); }
.col-subnav__actions { display: flex; align-items: center; gap: 2px; flex: none; }
.col-subnav__actions .btn { width: 38px; height: 38px; min-height: 38px; }
.col-subnav__actions .btn svg { width: 16px; height: 16px; }
.col-subnav__actions .btn.is-on { color: var(--accent); }

/* ---------------- 详情 · Hero ---------------- */
.col-detail-hero { padding: clamp(32px, 4.6vw, 68px) 0 clamp(24px, 3.4vw, 48px); }
.col-detail-hero__inner {
  display: grid;
  grid-template-columns: minmax(0, .88fr) minmax(0, 1.12fr);
  gap: clamp(30px, 5vw, 84px);
  align-items: center;
}
.col-cover--hero {
  aspect-ratio: 4 / 5;
  max-height: 640px;
  border-radius: var(--r-lg);
  box-shadow: var(--shadow-md);
}
.col-cover--hero .col-cover__glyph { font-size: clamp(110px, 15vw, 210px); }
.col-cover--hero .col-cover__mood { font-size: 11px; }
.col-cover--hero .col-cover__frame { inset: clamp(14px, 1.6vw, 22px); }
.col-detail__intro { min-width: 0; }
.col-detail__eyebrow { display: flex; align-items: center; gap: var(--sp-3); flex-wrap: wrap; margin-bottom: var(--sp-4); }
.col-detail__eyebrow .rule { width: clamp(24px, 3vw, 48px); }
.col-detail__title {
  font-family: var(--font-serif);
  font-weight: 400;
  font-size: clamp(32px, 4.6vw, 62px);
  line-height: 1.2;
  letter-spacing: .06em;
  color: var(--ink);
  text-wrap: balance;
}
.col-detail__sub {
  margin-top: var(--sp-4);
  font-family: var(--font-serif);
  font-size: clamp(16px, 1.4vw, 20px);
  line-height: 1.9;
  letter-spacing: .05em;
  color: var(--ink-2);
}
.col-detail__meta {
  display: flex; align-items: center; flex-wrap: wrap;
  gap: var(--sp-2) var(--sp-4);
  margin-top: var(--sp-5);
  padding-top: var(--sp-4);
  border-top: 1px solid var(--line);
  font-size: var(--fs-xs);
  letter-spacing: .12em;
  color: var(--ink-3);
}
.col-detail__meta b { font-weight: 400; color: var(--ink-2); font-family: var(--font-display); font-size: 13px; letter-spacing: .06em; }
.col-detail__meta .dot { color: var(--line-2); }
.col-note { margin-top: clamp(22px, 3vw, 32px); max-width: 52ch; }
.col-note p {
  font-family: var(--font-serif);
  font-size: clamp(15px, 1.15vw, 17px);
  line-height: 2.08;
  letter-spacing: .035em;
  color: var(--ink-2);
}
.col-note p + p { margin-top: .9em; }
.col-note p:first-child::first-letter {
  float: left;
  font-size: 2.7em;
  line-height: .92;
  margin: 5px 10px 0 0;
  color: var(--accent);
  font-family: var(--font-serif);
}
.col-detail__actions {
  display: flex; align-items: center; flex-wrap: wrap;
  gap: var(--sp-3);
  margin-top: clamp(24px, 3vw, 34px);
}
.col-detail__actions .btn--quiet { padding-inline: 12px; }

/* ---------------- 详情 · 目录 + 侧栏 ---------------- */
.col-detail-body { padding-block: clamp(24px, 3vw, 48px) 0; }
.col-detail-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 292px;
  gap: clamp(32px, 5vw, 76px);
  align-items: start;
}
.col-contents__head {
  display: flex; align-items: flex-end; justify-content: space-between;
  gap: var(--sp-4); flex-wrap: wrap;
  padding-bottom: var(--sp-4);
  border-bottom: 1px solid var(--line-2);
}
.col-contents__head h2 { font-size: clamp(20px, 2vw, 28px); }
.col-contents__head .eyebrow { margin-bottom: 6px; }
.col-contents__hint { font-size: var(--fs-xs); color: var(--ink-3); letter-spacing: .1em; }
.col-entries { position: relative; }
.col-entry {
  display: grid;
  grid-template-columns: 42px minmax(0, 1fr) auto;
  align-items: center;
  gap: var(--sp-4);
  padding: var(--sp-4) var(--sp-2);
  border-bottom: 1px solid var(--line);
  transition: background var(--dur-mic) var(--ease);
  border-radius: 2px;
}
.col-entry:hover { background: color-mix(in srgb, var(--surface) 44%, transparent); }
.col-entry__no {
  font-family: var(--font-display);
  font-size: 12px;
  letter-spacing: .16em;
  color: var(--ink-3);
  font-variant-numeric: tabular-nums;
}
.col-entry__main {
  display: flex;
  flex-direction: column;
  gap: 5px;
  min-width: 0;
}
.col-entry__title-row { display: flex; align-items: baseline; gap: 10px; flex-wrap: wrap; }
.col-entry__title {
  font-family: var(--font-serif);
  font-size: clamp(17px, 1.45vw, 20px);
  letter-spacing: .05em;
  color: var(--ink);
  transition: color var(--dur-mic) var(--ease);
}
.col-entry__meta {
  display: flex; align-items: center; flex-wrap: wrap;
  gap: 6px var(--sp-3);
  font-size: var(--fs-xs);
  letter-spacing: .08em;
  color: var(--ink-3);
}
.col-entry__type {
  display: inline-flex; align-items: center;
  padding: 1px 7px;
  border: 1px solid var(--line);
  border-radius: var(--r-xs);
  font-size: 10px;
  letter-spacing: .14em;
  color: var(--ink-3);
  background: color-mix(in srgb, var(--surface-2) 55%, transparent);
}
.col-entry__excerpt {
  font-family: var(--font-serif);
  font-size: 13px;
  line-height: 1.85;
  letter-spacing: .02em;
  color: var(--ink-3);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.col-entry__main:hover .col-entry__title,
.col-entry__main:focus-visible .col-entry__title { color: var(--accent); }
.col-entry__fav {
  width: 42px; height: 42px;
  flex: none;
  display: grid; place-items: center;
  border-radius: 50%;
  color: var(--ink-3);
  transition: all var(--dur-mic) var(--ease);
}
.col-entry__fav svg { width: 18px; height: 18px; }
.col-entry__fav:hover { color: var(--accent); background: var(--accent-soft); }
.col-entry__fav.is-on { color: var(--accent); }
.col-entry__fav.is-on svg { fill: color-mix(in srgb, var(--accent) 24%, transparent); }
.col-entry.is-missing { opacity: .55; }

/* 侧栏 */
.col-aside { position: sticky; top: calc(var(--nav-h) + 56px + 24px); display: flex; flex-direction: column; gap: var(--sp-6); }
.col-aside__card {
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  background: color-mix(in srgb, var(--surface) 42%, transparent);
  padding: var(--sp-5);
  display: flex; flex-direction: column; gap: var(--sp-4);
}
.col-aside__card .eyebrow { color: var(--ink-3); }
.col-aside__rows { display: flex; flex-direction: column; }
.col-aside__row {
  display: flex; align-items: baseline; justify-content: space-between;
  gap: var(--sp-3);
  padding: 9px 0;
  border-bottom: 1px solid var(--line);
  font-size: var(--fs-sm);
}
.col-aside__row:last-child { border-bottom: 0; }
.col-aside__row dt, .col-aside__row span:first-child { color: var(--ink-3); font-size: var(--fs-xs); letter-spacing: .1em; }
.col-aside__row b, .col-aside__row span:last-child { font-weight: 400; color: var(--ink-2); font-family: var(--font-serif); letter-spacing: .04em; }
.col-aside__themes { display: flex; flex-wrap: wrap; gap: 6px; }
.col-aside__themes .tag { transition: all var(--dur-mic) var(--ease); }
.col-aside__themes .tag:hover { color: var(--accent); border-color: color-mix(in srgb, var(--accent) 40%, transparent); }
.col-aside__actions { display: flex; flex-direction: column; gap: var(--sp-2); }
.col-aside__actions .btn { justify-content: flex-start; letter-spacing: .1em; }
.col-aside__actions .btn svg { color: var(--ink-3); }
.col-aside__quote {
  font-family: var(--font-serif);
  font-size: 13px;
  line-height: 1.95;
  color: var(--ink-3);
  padding: var(--sp-4);
  border-left: 1px solid var(--accent-2);
  background: color-mix(in srgb, var(--surface) 24%, transparent);
}

/* ---------------- 详情 · 下一个 ---------------- */
.col-next { padding-block: clamp(28px, 4vw, 56px) 0; }
.col-next__label { display: flex; align-items: center; gap: var(--sp-4); margin-bottom: var(--sp-5); }
.col-next__label .rule { flex: 1; }
.col-next__card {
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(0, .85fr);
  gap: clamp(20px, 3vw, 48px);
  align-items: center;
  padding: clamp(20px, 2.4vw, 28px);
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  background: color-mix(in srgb, var(--surface) 40%, transparent);
  transition: border-color var(--dur-mid) var(--ease), transform var(--dur-mid) var(--ease), box-shadow var(--dur-mid) var(--ease);
}
.col-next__card:hover { border-color: var(--line-2); transform: translateY(-3px); box-shadow: var(--shadow-md); }
.col-next__body { display: flex; flex-direction: column; gap: var(--sp-2); min-width: 0; }
.col-next__title { font-family: var(--font-serif); font-size: clamp(22px, 2.4vw, 32px); letter-spacing: .06em; line-height: 1.35; color: var(--ink); transition: color var(--dur-mic); }
.col-next__card:hover .col-next__title { color: var(--accent); }
.col-next__sub { font-family: var(--font-serif); font-size: var(--fs-sm); color: var(--ink-2); line-height: 1.9; }
.col-next__meta { display: flex; align-items: center; gap: var(--sp-3); margin-top: var(--sp-3); font-size: var(--fs-xs); color: var(--ink-3); letter-spacing: .1em; }
.col-next__meta .arrow { width: 32px; height: 32px; display: grid; place-items: center; border-radius: 50%; border: 1px solid var(--line-2); color: var(--ink-2); transition: all var(--dur-mic); }
.col-next__card:hover .col-next__meta .arrow { background: var(--ink); color: var(--bg); border-color: var(--ink); }
.col-next__meta .arrow svg { width: 14px; height: 14px; }
.col-next__card .col-cover { aspect-ratio: 16 / 9; }
.col-next__card .col-cover__glyph { font-size: clamp(46px, 5vw, 74px); }
.col-next__back {
  display: inline-flex; align-items: center; gap: var(--sp-2);
  margin-top: var(--sp-5);
  font-size: var(--fs-sm); color: var(--ink-2); letter-spacing: .08em;
  white-space: nowrap;
}
.col-next__back svg { width: 15px; height: 15px; flex: none; }
.col-next__back:hover { color: var(--accent); }

/* ---------------- 404 ---------------- */
.col-missing {
  min-height: 62vh;
  display: grid; place-items: center;
  padding: clamp(56px, 9vw, 120px) 0 clamp(40px, 6vw, 80px);
  text-align: center;
}
.col-missing__inner { display: flex; flex-direction: column; align-items: center; gap: var(--sp-4); max-width: 560px; }
.col-missing__code {
  font-family: var(--font-display);
  font-size: clamp(76px, 14vw, 150px);
  line-height: .9;
  font-weight: 400;
  letter-spacing: .1em;
  color: transparent;
  -webkit-text-stroke: 1px var(--line-2);
  text-stroke: 1px var(--line-2);
}
.col-missing__title { font-size: clamp(24px, 3vw, 36px); }
.col-missing__text { font-family: var(--font-serif); color: var(--ink-2); line-height: 2; max-width: 38ch; }
.col-missing__actions { display: flex; flex-wrap: wrap; justify-content: center; gap: var(--sp-3); margin-top: var(--sp-4); }
.col-missing__suggest {
  margin-top: var(--sp-8);
  display: flex; flex-wrap: wrap; justify-content: center; gap: var(--sp-2);
  width: 100%;
}
.col-missing__suggest a {
  font-family: var(--font-serif); font-size: var(--fs-sm);
  padding: 7px 14px; border: 1px solid var(--line); border-radius: var(--r-full);
  color: var(--ink-2); transition: all var(--dur-mic) var(--ease);
}
.col-missing__suggest a:hover { color: var(--accent); border-color: var(--accent); }
.col-empty { padding-block: clamp(48px, 8vw, 96px); }

/* ---------------- 响应式 ---------------- */
@media (max-width: 1180px) {
  .col-detail-layout { grid-template-columns: minmax(0, 1fr) 260px; gap: 40px; }
  .col-card--feature .col-cover,
  .col-card--wide .col-cover { min-height: 300px; }
}
@media (max-width: 980px) {
  .col-hero__inner { grid-template-columns: 1fr; align-items: start; gap: 32px; }
  .col-hero__aside { max-width: 520px; }
  .col-card--feature,
  .col-card--wide { grid-template-columns: 1fr; gap: var(--sp-5); }
  .col-card--feature .col-cover,
  .col-card--wide .col-cover {
    order: 0; height: auto; aspect-ratio: 16 / 9; min-height: 0;
  }
  .col-card--wide .col-card__body { order: 1; }
  .col-detail-hero__inner { grid-template-columns: 1fr; gap: 32px; }
  .col-cover--hero { aspect-ratio: 4 / 3; max-height: 440px; width: min(100%, 560px); }
  .col-detail-layout { grid-template-columns: 1fr; gap: 40px; }
  .col-aside { position: static; }
  .col-aside__card { max-width: none; }
  .col-index__hint { display: none; }
  .col-detail__title { font-size: clamp(30px, 5vw, 48px); }
}
@media (max-width: 760px) {
  .col-grid { grid-template-columns: 1fr; gap: clamp(28px, 5vw, 40px); }
  .col-cover { aspect-ratio: 4 / 3; }
  .col-hero__br { display: none; }
  .col-index__name { display: none; }
  .col-index__item { padding-inline: 8px; }
  .col-index__label { display: none; }
  .col-next__card { grid-template-columns: 1fr; }
  .col-next__card .col-cover { order: 2; aspect-ratio: 16 / 9; }
}
@media (max-width: 640px) {
  .col-hero__title { letter-spacing: .04em; }
  .col-hero__stats { gap: 14px; }
  .col-hero__foot-line,
  .col-hero__foot-en { display: none; }
  .col-hero__foot { justify-content: flex-start; }
  .col-subnav__meta { display: none; }
  .col-subnav__title { font-size: 13px; }
  .col-entry { grid-template-columns: 26px minmax(0, 1fr) auto; gap: 10px; padding-inline: 0; }
  .col-entry__excerpt { -webkit-line-clamp: 1; }
  .col-entry__no { font-size: 11px; }
  .col-entry__fav { width: 40px; height: 40px; }
  .col-detail__actions { gap: 8px; }
  .col-detail__actions .btn { min-height: 42px; padding-inline: 16px; }
  .col-cover--hero { aspect-ratio: 5 / 4; max-height: 360px; }
  .col-cover--hero .col-cover__glyph { font-size: clamp(88px, 26vw, 140px); }
  .col-contents__head { align-items: flex-start; flex-direction: column; gap: 6px; }
  .col-next__card { padding: 16px; }
}
@media (prefers-reduced-motion: reduce) {
  .col-card:hover .col-cover__glyph { transform: translate(-50%, -50%); }
  .col-next__card:hover { transform: none; }
}